Yannis :
> enigmail (and Kmail) prompts me for passphrase and when I
> enter it, it is not accepted.
> i repeat that in command line all things go normally.
> is there something to configure on gpg itself to cooperate with other clients?
Copy your gpg binary to a temp file say /tmp/gpg.orig and then
(temporarily) replace it with the following script:
#!/bin/sh
exec 2>/tmp/gpg.arguments
set -x
/tmp/gpg.orig "$@"
Make the script executable, try to decrypt a message and post the
contents of /tmp/gpg.arguments to the list. They might give us a clue.
(Put the original gpg binary back to its place)